The day of Glimmer's coronation arrives, overshadowed by grief. Accompanied by Adora and Bow, she embarks on a quest to find the Chamber of Queens.

Glimmer sends Adora, Mermista, Bow and Huntara to retrieve Mara's ship, but the Horde beats them to it. Catra meets Double Trouble, a shapeshifter.

The village of Elberon throws a party for Adora, Bow and Swift Wind. A village girl named Flutterina helps when the Horde springs another trap.

The squad waylays a Horde transport, only to have the tables turn. While Adora hunts for a new pulse bot, Glimmer takes advice from Shadow Weaver.

A spore storm traps the Horde trainees in the Woods and traps Adora in the Crystal Castle, where a damaged Light Hope is forced to reboot herself.

Catra orders Scorpia to find Entrapta's recordings so Hordak can perfect his experimental technology. Flutterina sows dissent in the squad.

After a disastrous mission, Mermista is certain there's a Horde spy in Bright Moon and vows to sleuth them out with her mystery novel experience.

With tensions rising between Glimmer and Adora and morale at an all-time low, Sea Hawk, Bow and Swift Wind go out for some fun. Things get out of hand.

Razz confuses the past and the present and has trouble telling Mara and Adora apart. But Adora desperately needs her help.

The Princess Alliance is split on whether to use the magic at the Heart of Etheria or try to destroy it. Scorpia arrives with a request for help.

Adora, Bow and Swift Wind arrive on Beast Island and make a shocking discovery. Glimmer heads to the Crystal Castle to talk to Light Hope.

Glimmer tries to convince Scorpia to reconnect with her runestone. On Beast Island, Entrapta reveals dire new details about the Heart of Etheria.

Catra and Hordak fight one another as Glimmer and Scorpia arrive in the Fright Zone. Adora sets off in a last-ditch attempt to stop Light Hope's plan.

Adora, Micah and the princesses search for a way to fight back and to rescue Glimmer. On Horde Prime's flagship, Catra schemes.

While Adora takes a much-needed rest, Mermista reluctantly leads the princesses into the Fright Zone so Entrapta can try to trace Horde Prime's signal.

As Bow, Entrapta and Adora attempt to keep Mara's ship functional, Horde Prime orders Catra to betray Glimmer – under threat of a memory wipe.

Forced to land on a desolate planet to replenish the ship's fuel crystals, Adora meets three siblings on the run from Horde Prime.

Adora surrenders herself to Horde Prime, hoping to buy time for Entrapta, Bow and Glimmer to rescue Catra and hack Horde Prime's server.

The team tries to keep the ship working and evade Horde Prime's pursuit. On Etheria, Micah struggles to relate to Frosta during a mission to Elberon.

Mermista, Scorpia, Perfuma and Sea Hawk go undercover underwater to recruit Prince Peekablue. Netossa notices that Spinnerella is acting strange.

The squad heads to the planet Krytis to find a way to get past Horde Prime's blockade on Etheria. Shadow Weaver appeals to Castaspella for help.

While Wrong Hordak's message of dissent spreads throughout the empire, the squad infiltrates the town of Erelandia to get a lead on their friends.

Adora, Catra, Perfuma and Netossa reenter the Fright Zone to rescue Scorpia while Bow and Glimmer head to the library to check on Bow's dads.

A strike team infiltrates Mystacor, searching for the Heart's failsafe, the Crystal of Arxia. Entrapta and Swift Wind gather data on the chip network.

The best friend squad heads for the Heart while the princesses attack the spire so Entrapta can disrupt the chip network. Horde Prime makes his move.

Shadow Weaver and Catra attempt to reach Adora. Glimmer faces her father while Bow tries to evade Scorpia long enough to execute Entrapta's program.